Chaeles v



(No Model.)

0. V. STEVENS.

v WINDMILL. No. 383,566. Patented Jan. 5, 1886.

Invent (Z 2'- N PETERS, Pheio-Lilhcgmpher. Washinginn, 0.6.

UNITED STATES j PATENT OFFI E.

OHARLES V. STEVENS, OF SOMONAUK, ILLINOIS, ASSIGNOR OF FOUR-FIFIHS TOJOHN CLARK AND HARRISONNVRIGHT, BOTH OF SAME PLACE.

WINDMlLL.

SPECIFICATION forming part of Letters Patent No. 333,566, dated January5, 1886. Application filed October 22, 1885. Serial No. 1P0,6"75. (Nomodel.)

To all whom it may concern.-

Be it known that I, GHARLES'V. STEVENS,

a citizen of the United States, residing at Somonauk, in the county ofDe Kalb and State of Illinois, have inveited a certain new and usefulImprovement in \Vindmills, of which the following is a description,reference being had to the accompanying drawings, in which Figure 1represents a side elevation of a windmill embodying my improvement; Fig.2, a plan view of the same; Fig. 3, a front elevation with thewind-wheel removed, and Fig. 4 a detail perspective view showing themanher in which the side vane is mounted.

Like letters refer to like parts in all the figures of the drawings.

My invention relates to windmills, its object being to provide means forregulating the action of the mill under varyingwind-pressure; and tothis end my invention consists in certain novel features, which I willnow proceed to describe, and will then specifically point out in theclaims.

In the drawings, A represents the upper portion of the framing or towerwhich supports the mill proper, and B the revolving support mounted inthe said tower or frame, and having attached to its upper end the head0, in which the shaft 01 of the wind-wheel D is mounted.

E represents the main vane, which is pivated to the face of therevolving support B, opposite to that upon which the Wheel D is mounted.This vane E is arranged with its pivots in the same vertical plane withthe axis of the shaft d, the vane being thus normally central withrelation to thewindwvlieel, as shown in Fig. 2 of the drawings.

F indicates a weight attached to a rope or cord, f, which passes over apulley, f, mounted on the support B, and is connected to an arm, F,attached to the main vane E. It is obvious that this weight willmaintain the vane normally in a position at right angles to the plane ofthe wind-wheel D. Any other similar construction may be employed forthis purpose.

G indicates a side vane, which is pivoted to the main vane in anysuitable manner, it being shown in the present instance as mounted uponan arm, E, depending from the main ings.

stem of the said vane. This side vane projects normally in a plane atright angles to the plane of the main vane, and is provided with an arm,9, which is connected in any suit-'- able manner to an arm, B,projecting from the support B, as shown in Fig. 2 of the draw- Thisconnection may be made directly by means of a suitable cord, rope, orchain; or it may be made, as shown in the drawings, by means of a cord,9, attached to the arm 9, and to a similar cord or rope, G, whichconnects the arm B with the vane E. It being understood of course thatthe main vane E is always in line with the direction of the wind, 6 itwill be seen that upon any undue increase in the force of the wind theside vane, G, will be turned upon its pivot, and will act upon the arm'Bthrough the medium of the conmeeting cord or rope, thus rotating thesup-. port B and throwing the wheel D slightly out of the wind. As soonas the wheel D is thus thrown out of the wind, it has aconstantlyincreasing tendency to turn out of the wind to a greaterextent, owing to the fact that it 5.

presents a larger surface on one side of the plane of the main vane thanon the other.

In order to overcome this tendency, I employ an auxiliary vane, H, whichis attached to a stem or shaft, h, mounted on the head 0, so as s to benormally in line with the main vane E. As soon, however, as the wheel Dis thrown out of the wind, as hereinbefore described, the vane H by therotation of the support B and head 0 is presented to the wind on theopposite side, and tends to counteract the tendency of the wheel D toturn out of the wind to a greater extent, as hereinbefore set forth, andalso to bring it up into the wind again as soon as the force of the winddiminishes.

I indicates a cord, which passes over a pulley, i, on the arm B, and isattached to the vane E, as shown in Fig. 2 of the drawings' This cordextends to the foot of the tower, so that by operating the same the vaneE may 5 be drawn into a position parallel to the plane of the wheel D,which will thus be held entirely out of the wind and remain stationary.

In this position, however, the auxiliary vane H will present its fullface to the wind, and

will tend to bring the parts back into operative position. In order toprevent this, I mount the shaft h of the auxiliary vane H in suitablebearings in the head 0, so as to permit the said shaft to rotate, and Iconnect an arm or projection, h, on the said shaft to the cord I bymeans of a similar cord, I, so that when the cord I is drawn down, ashereinbefore described, the shaft it will be rotated to cause theauxiliary vane H to assume a horizontal position, thus prcsenting itsedge to the wind. A suitable weighted arm, J, is attached to the shafth, in order to return the vane H to its operative position when the cordis released.

It will be seen from the above description that by attaching the sidevane to the main vane and connecting it to the support, as described, Iprovide an efficient means for inaugurating the motion of the mainwind-wheel out of the wind, and that by the use of the auxiliary vanethe tendency of the main wheel to turn too far out of the wind ischecked, and the said wheel is returned to its proper position when theforce ofthe wind diminishes.

It is obvious that various mechanical modifications in the details ofconstruction and the arrangement of the parts may be made withoutdeparting from the principle of my invention, and I therefore do notwish to be understood as limiting myself strictly to the preciseconstruction shown and described.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with the main wheel and main vane, of a side vanepivoted to the main vane and connected to the main wheel said support inline with the axis of the main wheel, and a side vane pivotally mountedon the main vane and connected to the support of the main wheel,substantially as and for the purposes specified.

3. The combination, with the main wheel and its support, of the mainVane pivoted to the said support, the auxiliary vane mounted on saidsupport in a position normally in line with the main vane, and the sidevane pivotally mounted on the main vane and connected to the support,substantially as and for the purposes specified.

4. The combination, with the main wheel D and its revolving support B,provided with arm B, of the main vane E, pivoted to said support, andthe side vane,G, pivotally mounted on the vane E, and provided with anarm, 9, connected with the arm B, substantially as and for the purposesset forth.

5. The combination, with the main wheel and its revolving support, ofthe main vane pivoted to said support in line with the axis of the mainwheel, and the auxiliary vane mounted on said support in a positionnormally in line with the main vane, substantially as and for thepurposes specified.

6. The combination, with the main wheel and its support, of the mainvane and its operating-rope I and the auxiliary vane H, attached to ashaft mounted in hearings in the support and connected to the ropeI by arope, I, to operate said auxiliary vane simultaneously with the mainvane, substantially as and forthe purposes specified.

CHARLES V. STEVENS.

Witnesses:

GILBERT Losnn, J AS. T. POWELL.

